Signed Script Problems w/ XPCOM & JavaScript (NS 6.1)

[Steven Morrissey]

Hello,

I'm so very close... Please help...

I have a signed javascript which attempts to instantiate an XPCOM plugin and
access some properties and call some methods. I signed the script with
signtool (and verified the sig) and I put the script and the jar on the same
server in the same directory. Here is the relevant HTML:

<SCRIPT ARCHIVE="priv.jar" ID=1 src="priv.js"></script>

here is the javascript in priv.js:

function SetPriv()
{

netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");
   var sample = Components.classes["@mozilla.org/XPWAS;1"].createInstance();
    sample = sample.QueryInterface(Components.interfaces.nsIXPWAS);
    sample.Realm = "Web Auth"
    alert(sample.Realm);
}

When I call SetPriv(), I get an error "Error: uncaught exception:
enablePrivilege not granted"...

If I take out the call to enable the privilege, I can't access the
property... This runs fine when everything is on my local machine. What do I
need to do to get this to work from the server?

TIA,
Steven